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Circuit/System Testing

    NOTE:

    If equipped, the following tests can be performed at an inline connector. See schematics for the corresponding terminals to test at.

  1. Ignition OFF, disconnect the harness connector at the secondary fuel level sensor.
  2. Ignition ON, scan tool installed, verify that the scan tool Fuel Level Sensor Right Tank parameter is greater than 4.5 V.
    • If less than the specified range, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the ECM.
  3. If all circuits test normal, perform the fuel level sensor component test before replacing the secondary fuel level sensor.
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